Lexmark CX310dn, Service Manual

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The following paper characteristics affect print quality and reliability. Consider these characteristics when evaluating
new paper stock.
• Weight —The printer can automatically feed paper weights from 60 to 220 g/m
2
(16 to 58 lb bond) grain long. Paper
lighter than 60 g/m
2
might not be stiff enough to feed properly, causing jams. For best performance, use 75 g/m
2
(20 lb bond) grain long paper. For paper smaller than 182 x 257 mm (7.2 x 10.1 in.), we recommend 90 g/m
2
(24 lb)
or heavier paper.
Note: Duplex is supported only for 63 g/m
2
–170 g/m
2
(17 lb–45 lb bond) paper.
• Curl — Curl is the tendency for paper to curl at its edges. Excessive curl can cause paper feeding problems. Curl can
occur after the paper passes through the printer, where it is exposed to high temperatures. Storing paper unwrapped
in hot, humid, cold, or dry conditions, even in the trays, can contribute to paper curling prior to printing.
• Smoothness —Paper smoothness directly affects print quality. If paper is too rough, toner cannot fuse to it properly.
If paper is too smooth, it can cause paper feeding or print quality issues. Always use paper between 100 and 300
Sheffield points; smoothness between 150 and 200 Sheffield points produces the best print quality.
• Moisture content —The amount of moisture in paper affects both print quality and the ability of the printer to feed
the paper correctly. Leave paper in its original wrapper until it is time to use it. This limits the exposure of paper to
moisture changes that can degrade its performance. To condition paper before printing, store it in its original
wrapper in the same environment as the printer for 24 to 48 hours before printing. Extend the time several days if
the storage or transportation environment is very different from the printer environment. Thick paper may also
require a longer conditioning period.
•
Grain direction — Grain refers to the alignment of the paper fibers in a sheet of paper. Grain is either grain long ,
running the length of the paper, or grain short , running the width of the paper. For 60 to 135 g/m
2
(16 to 36 lb
bond) paper, use grain long paper. For papers heavier than 135 g/m
2
, use grain short.
•
Fiber content —Most high-quality xerographic paper is made from 100% chemically treated pulped wood. This
content provides the paper with a high degree of stability, resulting in fewer paper
‑
feeding problems and better
print quality. Paper containing fibers such as cotton can negatively affect paper handling.
Unacceptable paper
The following paper types are not recommended for use with the printer:
•
Chemically treated papers used to make copies without carbon paper, also known as carbonless papers, carbonless
copy paper (CCP), or no carbon required (NCR) paper
•
Preprinted papers with chemicals that may contaminate the printer
•
Preprinted papers that can be affected by the temperature in the printer fuser
•
Preprinted papers that require a registration (the precise print location on the page) greater than ±2.3 mm (±0.9
in.), such as optical character recognition (OCR) forms
Note: In some cases, registration can be adjusted with a software application to successfully print on these
forms.
• Coated papers (erasable bond), synthetic papers, thermal papers
•
Rough-edged, rough or heavily textured surface papers, or curled papers
•
Recycled paper that fails EN12281:2002 (European)
•
Paper weighing less than 60 g/m
2
(16 lb)
•
Multiple-part forms or documents
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General information
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